It time to work on the hard points for the seat belts. I centered and drilled for the 7/16 seat belt bolts. I used a 3/8” drill bit for the fine threaded bolt. I then ground the aluminum to rough surface and sanded the fuselage for a good bond with the milled fiber resin mix. I will be using the inertera seat belts so a hard point had to be located under the carbon fiber beam bolt.